Pivot-hinge.



F. A. A. BARRS.

PIVOT HINGE.

APPLICATION FILED .IULY 13.1918.

Patented Apr. 8,1919.

INVENTOR JraniZ'AA .ZarrJ.

B fl- ATTORNEY:

FRANK A. A. BABES, 0F VANCOUVER, BRITISH COLUMBIA, CANADA.

PIVOT-HINGE.

' Specification of Letters Patent.

Patented A es, 1919.

Application filed July 13, 1918. Serial No. 244,783.

To all whom it may concern:

Be it known that I, FRANK A. A. BARRS, a citizen of the Dominion of Canada, residing at -Vancouver, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Pivot- Hinges, of which the following'is a specification.

This invention relates to a pivot hinge for a window sash on which the window may be moved. through a half revolution or one hundred and eighty degrees, toreverse the sash and facilitate cleaning of the glass, and having provision to positively secure the sash against rotation from either the closed position or from any predetermined angle of opening.

It is designed as a substantial, serviceable hinge of this class that may be rapidly fitted to the sash and frame and with provision permitting removal of the sash from, thepivot bearing when desired.

The invention is particularly described in the following specification, reference being made to the drawings by which it is accom panied, in which:

Figure 1 is a diagrammatic end elevation of one of my improved pivot hinges, the latter being shown in section on the line 1-1 on Fig. 3 and the window indicated as swung to the open position.

Fig. 2 is a detail perspective view of the parts that constitute my improved pivot hinge, the several parts being separated.

Fig. 3 is an edge view of the pivot hinge, the parts being at their normal or closed position.

Fig. A is a detail face view, partly in section, of a modified means for locking the hinge.

The device comprises the combination with a Window frame 2 and its sash 3, of a pivot pin 6 secured to each opposite side of the window frame by a plate 8 to project the pin 6 beyond the inner face of the sash with its axis parallel to that face. Each pin 6 is circumferentially grooved to receive a bearing 9 secured to each sash stile 3 by a plate 7, the bearing being diametrically jointed on the pin and the outer half secured by screws, as shown in Figs. 1 and 3, that the cover of the bearing may be readily removed to perm-it the sash to be lifted out of its bearings on the pins 6 of the frame. The outer end of one or both of the pins 6 beyond the groove of the bearing 9 is enlarged to form a locking head 10 and. this head has provision to receive a locking means secured on that portion of the hinge in which is the bearing 9.

Figs. 2 and 3 show the head as having a series of slots 11 across its outer face to receive a locking bar 12 pivotally mounted at 13 to the bearing plate 7 of the sash, that it may be moved into any one of the slots 11 of the locking head and prevent rotation of the sash bearing on its pivot pins 6. On the opposite side of the head 10 to which this locking bar 12 is pivoted the bar enters a slotted keeper 14 to afiord a better security of hold.

An alternative locking means is shown in Fig. A where the locking head 10, instead of being slotted across its end face, is radially apertured at 15 to receive the outer end of a bolt 16 slidably mounted in that portion 7 of the hinge which is secured to the sash. This bolt 16 is normally retained in the locked position by a spring 17 and is withdrawn from such by a line connected. to an eye 18 screwed in the end of the locking bolt and projecting through the back end of the bolt slideway and spring casing 19. The outer end of this bolt 16 is conical or conoidal to facilitate entrance into the locking apertures but is cylindrical to fill the aperture when fully projected into it.

The window frame 2 and its sash 3 are oppositely rabbeted on opposite sides of the axis of rotation to form a weather stop and limit movement of the sash beyond the plane of its frame in one direction.

The hinge is a thoroughly practical and serviceable one and has the advantage of be ing very readily attached to the window frame and sash and is the only one with which I am acquainted that provides a positive means for securing the sash against rotation on its pivot, either at the closed position or any of the intermediate open positions provided for.

Having now particularly described my invention, I hereby declare that what I claim as new and desire to be protected in by Letters Patent, is:

1. A pivot hinge for a window sash which comprises a plate having a pin projecting at right angles thereto, said pin having a reduced diameter bearing section terminating in an enlargedhead, a second plate having a split bearing member to engage said pin at the bearing section and be held against longitudinal movement on the pin by engagement with said enlarged head and by en gageinent with the shoulder formed on the pin opposite the head by the reduced bearing part, said head having recesses and a latch device on said second plate for entering said recesses to lock said plates against turning V movement with relation one to the'other.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, 7

pin at the bearing section and be held against longitudinal movementon the pin by engagement with said enlarged head and by engagement with the shoulder formed'on the pin opposite the head by the reduced bearing part, said head having a plurality of crossed diametrically extended grooves or slots, a latch plate hinged to said second 7 plate and adapted to lie in said slots, a fork member on said second plate into which said latch plate projects when in the latching po FRANK A. A. BARRS.

Washington, D. 0." 

